Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol

Detalhes bibliográficos
Autor(a) principal: Ramírez-Santos,Álvaro A.
Data de Publicação: 2012
Outros Autores: Acevedo-Peña,Próspero, Córdoba,Elcy M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012001000008
Resumo: Titanium dioxide porous thin films on the Anatase phase were deposited onto glass slides by the sol-gel method assisted with polyethylene glycol (PEG). The dip-coated films were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TGA and DTG), UV-visible spectroscopy and X-ray diffraction (XRD). The photocatalytic activity of the films was determined by means of methyl-orange oxidation tests. The resultant PEG-modified films were crack-free and developed a porous structure after calcination at 500 °C. Photo-oxidation tests showed the dependency of catalytic activity of the films on the number of layers (thickness) and porosity, i.e. of the interfacial area.
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spelling Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycolpolyethylene glycol (PEG)photocatalysisTiO2 filmsTitanium dioxide porous thin films on the Anatase phase were deposited onto glass slides by the sol-gel method assisted with polyethylene glycol (PEG). The dip-coated films were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TGA and DTG), UV-visible spectroscopy and X-ray diffraction (XRD). The photocatalytic activity of the films was determined by means of methyl-orange oxidation tests. The resultant PEG-modified films were crack-free and developed a porous structure after calcination at 500 °C. Photo-oxidation tests showed the dependency of catalytic activity of the films on the number of layers (thickness) and porosity, i.e. of the interfacial area.Sociedade Brasileira de Química2012-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012001000008Química Nova v.35 n.10 2012reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422012001000008info:eu-repo/semantics/openAccessRamírez-Santos,Álvaro A.Acevedo-Peña,PrósperoCórdoba,Elcy M.eng2021-02-11T00:00:00Zoai:scielo:S0100-40422012001000008Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2021-02-11T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol
title Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol
spellingShingle Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol
Ramírez-Santos,Álvaro A.
polyethylene glycol (PEG)
photocatalysis
TiO2 films
title_short Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol
title_full Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol
title_fullStr Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol
title_full_unstemmed Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol
title_sort Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol
author Ramírez-Santos,Álvaro A.
author_facet Ramírez-Santos,Álvaro A.
Acevedo-Peña,Próspero
Córdoba,Elcy M.
author_role author
author2 Acevedo-Peña,Próspero
Córdoba,Elcy M.
author2_role author
author
dc.contributor.author.fl_str_mv Ramírez-Santos,Álvaro A.
Acevedo-Peña,Próspero
Córdoba,Elcy M.
dc.subject.por.fl_str_mv polyethylene glycol (PEG)
photocatalysis
TiO2 films
topic polyethylene glycol (PEG)
photocatalysis
TiO2 films
description Titanium dioxide porous thin films on the Anatase phase were deposited onto glass slides by the sol-gel method assisted with polyethylene glycol (PEG). The dip-coated films were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TGA and DTG), UV-visible spectroscopy and X-ray diffraction (XRD). The photocatalytic activity of the films was determined by means of methyl-orange oxidation tests. The resultant PEG-modified films were crack-free and developed a porous structure after calcination at 500 °C. Photo-oxidation tests showed the dependency of catalytic activity of the films on the number of layers (thickness) and porosity, i.e. of the interfacial area.
publishDate 2012
dc.date.none.fl_str_mv 2012-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012001000008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012001000008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-40422012001000008
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.35 n.10 2012
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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